一種新的影像編解碼技術

A Scalable and Interactive Codec for Image Compression

郭倫嘉(Lun-Chia Kuo) ； 王聖智(Sheng-Jyh Wang)

《電腦與通訊》 116期 (2006/06) Pp. 137-144

https://doi.org/10.29917/CCLTJ.200606.0021

摘要

在這篇論文中我們提出了一個Feature-Based的影像壓縮方法，利用影像曲面上的高曲率點(Verge Point)來達成影像壓縮的目的；這些高曲率點可進一步的利用B-spline Control Point加以近似，來達到更大的壓縮率與更高的彈性。本影像壓縮法之特色在於其具備不同型態的可調性，包含Spatial Scalability，SNR Scalability與Shape Scalability；此外這種影像壓縮方式也很適合做ROI(Region of Interest)傳輸，具備良好的互動性。

關鍵字

高曲率點 ； 可調性傳輸 ； 互動性傳輸

並列摘要

This paper presents a feature-based scheme for image compression. In the proposed method, the features in an image are recoded by three-dimensional verge points, which are defined as high curvature points on the image surface. The verge point representation can be further condensed using B-spline control point approximation. By encoding and transmitting these control points, the features in an image could be revealed at the decoder side. Furthermore, by selecting different coding modes, the proposed method can offer diversified scalabilities including SNR scalability, spatial scalability, and shape scalability. In addition, this coding technique is suitable for Region of Interest (ROI) selection and transmission. Experimental results are provided to present the scalability and interactivity of the proposed method.

並列關鍵字

Verge Point ； Scalable Transmission ； Interactive Transmission